A real-world application of physics/chemistry in a medical device. I have attach

Question

A real-world application of physics/chemistry in a medical device.
I have attached photos of the manual of the device.
Questions are:
1) What are the wavelength measurements?
2) What is the total number of purses sent out per session? Each session is 15 min on setting of Medium.
UNIT SPECIFICATIONS Specifications Description Item Ultrasound Modulation Frequency. | 1 OMHzt 1096 Max. Output Power: Output Power: Pulse Repetition Rate: Modulation Duty Cycle: Effective Radiating Area: le at 1 00%) 64We20% (Modulation d L: 0.32w 2096 : 20w 209 640w 2096 100Hz 10% L (5%), M (50%), H (100%) 4.0cm"± 20% Pulsed 5.0 1.6wcm2 20% (Modulation duty scycle at 100%) Ultrasound Waveform: Probe BNR (Max: Max. Effective Intensity: Effective Intensity Working Time: Preheat Temperature: Adjustable at 5 minutes, 10 minutes, 15 minutes Max. 35+5 degree centigrade (NOTE: Actual preheat temperature will be influenced by the environmental temperature and preheat time) Max. 3 minutes 202 mm (L) x 49 mm (W) x 70 mm (H) 193g (without adapter) Preheat Time: Dimension: Material of Applicator: Aluminum Alloy Beam Type Degree of Protection against Water IPX7 (Only for Treatment Head) Collimated Voltage: AC 100-240V Frequency: 50Hz/60Hz Output voltage: DC 15V, Max.Currency: 1.2A Choose working time: 5m-10m-15m-0m (stop) Choose modulation duty cycle: 5%-50%-100% 5, 10, 15 minutes PowerInput: Adapter Output ButtonsMode: Indication Time Indication Lights: Time: Duty Cycle Indication Lights:Low (L), Medium (M), High (H) Program Lists MODULATION OUTPUT POWER PROGRAM DUTY FACTOR WAVE CHARACTERWiem afo 50% 100% Low Medium High 0.08420% 0 820% 1.620% rating Conditions: 5~40C; 30%~75%RH: 800~1060hPa

Explanation / Answer

(a)

we know from Ultrasound range is defined (American National Standards Institute) as "sound at frequencies greater than 20 kHz." atmospheric pressure in air is ultrasonic waves have 1.9 cm or less wavelengths

from the information you give that this instrument can use 1MHz or 1.1 MHz or 0.9 MHz

b) What is the total number of purses sent out per session? Each session is 15 min on setting of Medium ?

in this manual of mediuam is used by 10 min and the totoal num,ber purses sent for per session is apporoxmation of 50-80

we have out put power is 3.2 W and modualtion is around 0.8

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